High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes) An International Journal

ISSN for PRINT: 1093-3611

For Online Access

Best Paper Award Selection - Editorial Board Site

2002, Volume6

Issue 1

130 pages

Issue price - $144.00

G. Mori
Department of Nonferrous Metallurgy, University of Leoben, Austria

G. Brecka
Department of Nonferrous Metallurgy, University of Leoben, Austria; Veitsch-Radex AG, Austria

T. Wittner
Department of Nonferrous Metallurgy, University of Leoben, Austria; VOEST-Alpine Stahl Linz GmbH, Austria

P. Paschen
Department of Nonferrous Metallurgy, University of Leoben, Austria

Reducdon of group IV and V transition elements by metallothermic processes is discontinuous, energy intensive and yields in a poor metal quality. Electrowinning in a molten bath of NaCl-KCl-NaF-MeCl_x seems to be an attractive alternative. Main difficulties in electrowinning of refractory metals are their different stable valencies and the high corrosivity of the reactants. Therefore many papers deal with the understanding of the stable valencies and the reaction mechanisms in the melt to optimize electrolyte composition. Only few authors describe the electrocrystallization behavior of refractory metals under different working conditions.

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